Fixed: missing new voicemail notification with some carriers/devices
The bug has been desbribed/documented pretty well over here:
http://code.google.com/p/cyanogenmod/issues/detail?id=2801

(cherry picked from commit 59ef465536a2afc7765e8c59d43bfdff532b6c5c)
(cherry picked from commit 0521546b7df7186d21b0a43571171ae3c30b634f)

Change-Id: I7b00ae61be00ffc457ddaf4685b39412cb1a5f89